Plumbing fixture



FIG. 1 is a left, top, front perspective view of a plumbing fixture according to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view thereof being a mirror image of the front shown;

FIG. 4 is a left side elevational view thereof, the right side elevational view thereof being a mirror image of the left side shown; and,

FIG. 5 is a bottom plan view thereof.

The broken line representations in the figures, are for the purpose of illustration only, and form no part of the claimed design. 

The ornamental design for a plumbing fixture, as shown and described. 